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eXtreme Adaptive Optics Planet Imager: overview and status

Macintosh, Bruce and Bauman, Brian and Wilhelmsen Evans, Julia and Graham, James and Lockwood, Christopher and Poyneer, Lisa and Dillon, Daren and Gavel, Don and Green, Joe and Lloyd, James and Makidon, Russell and Olivier, Scot and Palmer, Dave and Perrin, Marshall and Severson, Scott and Sheinis, Andrew and Sivaramakrishnan, Anand and Sommargren, Gary and Soummer, Remi and Troy, Mitchell and Wallace, Kent and Wishnow, Edward (2004) eXtreme Adaptive Optics Planet Imager: overview and status. In: Advancements in Adaptive Optics. Proceedings of SPIE. No.5490. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 359-369. ISBN 9780819454225.

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As adaptive optics (AO) matures, it becomes possible to envision AO systems oriented towards specific important scientific goals rather than general-purpose systems. One such goal for the next decade is the direct imaging detection of extrasolar planets. An "extreme" adaptive optics (ExAO) system optimized for extrasolar planet detection will have very high actuator counts and rapid update rates - designed for observations of bright stars - and will require exquisite internal calibration at the nanometer level. In addition to extrasolar planet detection, such a system will be capable of characterizing dust disks around young or mature stars, outflows from evolved stars, and high Strehl ratio imaging even at visible wavelengths. The NSF Center for Adaptive Optics has carried out a detailed conceptual design study for such an instrument, dubbed the eXtreme Adaptive Optics Planet Imager or XAOPI. XAOPI is a 4096-actuator AO system, notionally for the Keck telescope, capable of achieving contrast ratios >10^7 at angular separations of 0.2-1". ExAO system performance analysis is quite different than conventional AO systems - the spatial and temporal frequency content of wavefront error sources is as critical as their magnitude. We present here an overview of the XAOPI project, and an error budget highlighting the key areas determining achievable contrast. The most challenging requirement is for residual static errors to be less than 2 nm over the controlled range of spatial frequencies. If this can be achieved, direct imaging of extrasolar planets will be feasible within this decade.

Item Type:Book Section
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Macintosh, Bruce0000-0003-1212-7538
Perrin, Marshall0000-0002-3191-8151
Soummer, Remi0000-0003-2753-2819
Additional Information:© 2004 Society of Photo-Optical Instrumentation Engineers (SPIE). This research was performed under the auspices of the U.S. Department of Energy by the University of California, Lawrence Livermore National Laboratory under Contract W-7405-ENG-48, and also supported in part by the National Science Foundation Science and Technology Center for Adaptive Optics, managed by the University of California at Santa Cruz under cooperative agreement No. AST–9876783. Support for this work was also provided by a grant from the Gordon and Betty Moore Foundation to the Regents of the University of California, Santa Cruz, on behalf of the Laboratory for Adaptive Optics. The content of the information does not necessarily reflect the position or the policy of the Gordon and Betty Moore Foundation, and no official endorsement should be inferred.
Funding AgencyGrant Number
Department of Energy (DOE)W-7405-ENG-48
Gordon and Betty Moore FoundationUNSPECIFIED
Subject Keywords:Adaptive optics, extrasolar planets, coronagraphs, MEMS
Series Name:Proceedings of SPIE
Issue or Number:5490
Record Number:CaltechAUTHORS:20190221-110522469
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Official Citation:Bruce A. Macintosh, Brian Bauman, Julia Wilhelmsen Evans, James R. Graham, Christopher Lockwood, Lisa Poyneer, Daren Dillon, Don T. Gavel, Joseph J. Green, James P. Lloyd, Russell B Makidon, Scot Olivier, Dave Palmer, Marshall D. Perrin, Scott Severson, Andrew I. Sheinis, Anand Sivaramakrishnan, Gary Sommargren, Remi Soummer, Mitchell Troy, J. Kent Wallace, and Edward Wishnow "eXtreme Adaptive Optics Planet Imager: overview and status", Proc. SPIE 5490, Advancements in Adaptive Optics, (25 October 2004); doi: 10.1117/12.552188;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:93098
Deposited By: George Porter
Deposited On:26 Feb 2019 20:29
Last Modified:09 Oct 2019 23:39

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